The GRE Test For Dummies, 6th Edition, is simple and straightforward enough for first-time GRE victims, er, test-takers that they can understand the entire exam and do well right out of the starting gate. But it’s also detailed and sophisticated enough that veterans — folks who’ve taken the exam once or twice before but aren’t resting on their laurels (sounds painful, anyway) — can learn the more complicated information necessary to get those truly excellent scores.